Home / 72,490.06-100,042.32-40,227.71

Finding the Fourth Proportional to 72,490.06, 100,042.32 and 40,227.71

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Solution

The fourth proportional to 72,490.06, 100,042.32 and 40,227.71 is: 55,517.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,490.06 : 100,042.32 = 40,227.71 : x
  2. Step 2: Convert to fraction form
    72,490.06/100,042.32 = 40,227.71/x
  3. Step 3: Cross multiply
    72,490.06x = 100,042.32 × 40,227.71
  4. Step 4: Simplify right side
    72,490.06x = 4,024,473,436.69
  5. Step 5: Solve for x
    x = 4,024,473,436.69/72,490.06
  6. Step 6: Final answer
    x = 55,517.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.